
Originally Posted by
Mr. Vandemar
In the modern analysis, Brutus is seen as the protagonist because of how he sticks to his word, how he never breaks his honour, and how he never manipulates anyone. He does what he sees as best for Rome, not for himself (like any other character in the book). Modern society does not see the same loyalty to the monarch (or Caesar) as feudal society did.
In the medieval analysis, Brutus was seen as the antagonist. The peasantry, who were loyal to the monarchy, hated Brutus because he broke his loyalty (although in favour of what he thought was right). The word "brutal" comes from the name Brutus.